Use our calculators to find the amount of material needed for a construction project

Construction Calculators and Estimation Tools

Construction calculators are useful for estimating material for many construction, remodeling, and renovation projects. Our tools provide geometric calculations for building projects such as concrete and masonry work, landscaping, fences, flooring, siding, roofing, and other projects and help find how much material should be ordered. Most tools include material price estimation to give an estimated cost of your project. Share your results and easily request quotes from contractors for your project.

Construction Resources

Acreage Calculator

Calculate the acreage of an area by entering the length and width of the land. An acre is a 43,560 square foot area of land.

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Baluster Calculator

Estimate the number of balusters needed for a deck or stair railing. The maximum spacing between balusters is 4″.

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Concrete Block Calculator

Find how many concrete blocks are needed by entering the size of the wall and the size of the block. Estimate concrete block material and cost.

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Electricity Cost Calculator

Calculate electricity cost by entering wattage and usage of electricity and the cost per kilowatt-hour. Estimate energy costs and kilowatt-hour electricity usage.

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Fence Calculator

Estimate fence material given the style of the fence and the length. Find post distance, posts, rails, and pickets needed to build a fence.

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Flooring Calculator

Estimate flooring needed for a room and calculate flooring material costs. Flooring material can be calculated by finding the square footage of the floor.

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Grass Seed Calculator

Learn how to estimate how much grass seed is needed for your lawn. Enter square footage, length & width, or the acreage of the land to find how many pounds of seed is needed.

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Inch Fraction Calculator

Convert inch fractions to decimal and decimal inches to fractions. Convert inches and inch fractions to millimeters and centimeters. Convert inches and centimeters to feet.

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Ohm’s Law Calculator

Calculate watts, volts, amps, ohms, power, voltage, current, and resistance using the Ohm’s Law and Watt’s Law formulas.

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Plant and Flower Calculator

Estimate how many flowers or plants are needed to fill a landscaping bed using the plant calculator. Find how many plants will be needed when using a rectangle or triangle planting pattern.

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Post Hole Concrete Calculator

Estimate concrete for post hole projects. Calculate how many yards of concrete or bags of concrete are needed for filling post holes for fences, decks, footings, and columns.

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Roof Pitch Calculator

Find the pitch of a roof using the rise and run or the angle of the roof in degrees. Learn how to find the pitch of a roof by finding the rise and run.

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Siding Material Calculator

Find the squares of material needed for a vinyl siding installation using our siding calculator. Estimate walls and gables and learn more about calculating siding squares.

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Soil Calculator and Garden Planner

Estimate soil needed to fill a garden bed or landscaping area given the length, width, and depth of the space. Find how many bags of soil, cubic yards, or cubic feet are needed.

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Square Footage Calculator

Find square footage of a room or outdoor space by entering the length and width. Square footage can be found my multiplying length times width in feet.

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Square Yards Calculator

Calculate square yards by entering length and width measurements. Estimate material costs and yardage for carpet and flooring projects.

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Trim and Moulding Calculator

Estimate how many mouldings you need to trim a room using the trim and moulding calculator. Find the room’s perimeter to find out how much trim is needed.

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Window Air Conditioner Size Calculator

Calculate what size of window air conditioner is needed for your room given the room’s size. The calculator find’s the recommended Energy Star air conditioner size based on square footage.

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